( 8 + 2 ) · 50 = 10 · 50 = 500
Или
( 8 + 2 ) · 50 = 8 · 50 + 2 · 50 = 400 + 100 = 500
(8+2)*50= 8+2=10*50=50
( 8 + 2 ) · 50 = 10 · 50 = 500
Или
( 8 + 2 ) · 50 = 8 · 50 + 2 · 50 = 400 + 100 = 500
(8+2)*50= 8+2=10*50=50